The DL500B is an 1800 hp ALCo locomotive based on one of their "World Series" designs. The two Australian examples of this type of locomotive are the New South Wales Government Railways (NSWGR) 44 class

New South Wales 44 class locomotive

The New South Wales 44 class locomotives were one of the first locomotives built by A. E. Goodwin in the Alco tradition. One-hundred of these DL500B units were built. Introduced in 1957, these locomotives have served every part of NSW, from services in the North and South, to the Indian Pacific...

 No.s 4401 - 44100 (100 in class) and the South Australian Railways (SAR) 930 class

South Australian Railways 930 class

The 930 class of diesel locomotives were a class of mainline locomotive built by A. E. Goodwin for the South Australian Railways. They have a Co-Co wheelbase. Some are single ended, with a cab at the 'nose' end, while the balance are double ended, with a round cab at one end and a flat cab at the...

.

The NSWGR 44 class ALCo was used from fast passenger services to slow freight.